How Shazam Works

[@pierreuntel1970]

Plot twist: Shazam hired millions of employee sit behind the screen to recognize it

[@vinitfirke2201]

Just like Google makes its employees sit behind search engine curtain according to congressmen eh? (Don't want to bring politics but the debate between congressmen and Google CEO was too funny)

[@pauldotdll3276]

*coughts* amazon.

[@droid16beta97]

I'd love it. You know how sometimes you hear a stranger listen to a rather unpopular song, that you recognize and you're like "DUUDE, I know that song. Wish I could tell them, but that would be weird and awkward. I need someone to acknowledge the fact, that I recognize this song!" Well NOW THEY WILL!

[@NicolaiWeitkemper]

This is what my old neighbor thinks how Google works...

[@Garry-jj6jh]

@@NicolaiWeitkemper its really how that worked some years ago

[@Grove332]

Recognizing whose car is pulling up into the driveway from it's noise or recognizing who's walking around house by the sound and weight of their steps. The Brain is quite amazing.

[@muzzthegreat]

And then your dog does it . . . I used-to have a diesel, easy recognition for him; and it took him no more than two weeks to get my new car [petrol] sound down-pat. I used to have a Mitsubishi 4-cyl and now 20years later I can still tell you a 4G64 is coming.

[@emreevo8]

The cat I used to feed on my street would recognize the sound of my scooter from 100 meters away.

[@nooranik21]

My roommates used to car pool to work each day. I could tell which one was driving the car that day by how they drove up to the house.

[@bobbobson9024]

2.3 seconds? clearly they didn’t use smash mouth “Som....” is all it takes for most of us

[@svartdraken]

...BODY ONCE TOLD ME

[@JaylinAAllen]

The world is gonna roll me

[@sadfoxfilms1896]

I ain't the sharpest tool in the shed

[@g_dub]

She was looking kind of dumb...

[@icenturioniofficial8066]

With her finger and her thumb

[@richardhudson4649]

I don't understand a single thing in this video. It is still fascinating.

[@mrdcon101]

Richard Hudson haha i was thinking the same

[@lagrivv]

I was pretending to understand, until i read ur comment

[@khazza930]

there are 2 main parts of the video: 1. Shazam has a database of songs and their fingerprints. When you're listening to a song and ask Shazam about it, it builds the fingerprint from what it hears, and looks for its match in the database. How is the fingerprint built? That's a secret only the Shazam team know, and likely involves a lot of filters and calculations. 2. How can Shazam search such a big database so fast? It uses this hash to build an index of all songs. So instead of comparing the fingerprint to all 20 million fingerprints in the database, it only has to compare it with maybe 100, or less. Similar to finding a book in a library. You don't go through all shelves and read all book covers. Instead you ask a computer about the book, and it tells you which shelf to look at. Only difference is that the hash does a bit more than this library computer. The hash tells you where the fingerprint would be if it existed, OR where it should go if it's being added now to the database.

[@cun7sathome]

Should of gone to school then.... learn how to learn

[@mint-o5497]

Richard Hudson reall not that hard to understand if u listen

[@priyanshurai9614]

And here I thought: if(song_tosearch == song_fromdatabsse) print(song_fromdatabase); else: print("check ur network")

[@KN-wi4ns]

Priyanshu Rai lol

[@SkymidMusic]

Lol

[@karthikkumar5341]

I wish it was that simple.. LOL

[@thomassims3096]

Syntax error in line 1, missing parameters “:”

[@colivart]

Lol

[@bmay8818]

WHAT?! NO WAY!!

[@codycast]

Bryce Mayall what’s funny is Shazam isn’t even that old. I remember just a few years ago (?) when it came out and I’d show it working to my friends and they were amazed. Crazy how fast we go to not being impressed any longer.

[@Basieeee]

And it works really fast.

[@toebeexyz]

@@angelsv Someone's not had a good day, sheesh

[@USSAnimeNCC-]

Me too

[@bmay8818]

@@angelsv Wow, that's a crappy thing to say. My kid isn't lazy, nor does she just sit around watching TV all day. Good luck in life, believing "kids these days" all suck. I'm sure there's no case where something your predecessors found amazing, you thought was just meh, 'cause you're better.

[@nightmare5479]

Oh my. This is jackpot. Another video about music tech. I love this channel.

[@tylerdurden788]

Shazam is magic

[@wiceorc5105]

They basicially created a miracle but only to realize that the app isnt very useful. You can just ask a dj what is the name of the song. Or most propably you will hear the song played again later day. And who cares about the music when theyre hunting for.. you know well sex lol.

[@khalidabdulghani]

It most certainly is

[@rohitagarwal9174]

what are the other music videos please tell me

[@nightmare5479]

@@rohitagarwal9174 click on the channel and see his previous upload.

[@Russocass]

Shazam is great, incredible. But I don't understand why soundhound isn't as recognized as shazam, it basically does the same but you can also sing the lyrics or any melody of the song, even if you do it a little out of tune it will find it. That's just mindblowing.

[@stephenward2743]

Well Shazam has been around for quite some time, I remember it being on my blackberry back in the day and working almost just as well. I also would imagine that Shazam has a greater pool of songs as its more well known and thus more artists are putting their tracks on the app. That being said I checked on the google play store and soundhound has over 100 million downloads so its hardly unrecognized.

[@whogivesadamnforuser]

JRussoC For me, the soundhound’s database was not nearly as diverse and immense as shazam’s was. Especially for foreign songs. It was just the circumference ,if you will, of the database that made me use shazam all the tine.

[@RR-ir6ss]

Soundhound sucks ass. It only recognizes popular songs.

[@aravindr7166]

What about Google assistant?

[@prieremonte]

IMO shazam has better UI than soundhound.

[@yunus6009]

This had always been in my recommendation

[@yunus6009]

Ok boomer

[@yunus6009]

What is a boomer

[@yunus6009]

Only a boomer will ask this question

[@aduptuniform2647]

Did u just have a conversation with yourself? I am very confused

[@yunus6009]

Yes I had

[@MadMiff]

This is a perfect example of how information should be presented on youtube. The Irish accent is just so well delivered and easy to follow combined with the visual information. There are a lot of tubers out there who should learn from this example.

[@mariotaz]

Check out Matthewmatosis and SuperEyePatchWolf lol. Exact definition of this

[@RealEngineering]

Was hoping to fix the pronunciation of "timbre", as a Patreon supporter (William Leu) pointed it out. I am currently extremely sick after getting food poisoning while filming in Africa, and couldn't get a decent take to fit in. On a positive note, we got great footage and I can't wait to show you what we filmed.

[@Haji84]

Real Engineering wish you get better soon

[@wesleysull]

This is one of your best videos yet. And that is saying something with your library!

[@willdepue1071]

Nationwide delivery (Zipline?) ?

[@lcs_crr]

Get better soon! Cannot wait

[@RealEngineering]

@@willdepue1071 someone has been watching my instagram stories

[@PaperGunner722]

Okay cool but why cant I just go "do dooood do do dod o do" to find that one EDM song i heard from 10 years ago and dont remember it's beat.

[@RealEngineering]

You actually can in Soundhound I believe

[@tylerdurden788]

@@RealEngineering apparently there's an app for everything lol

[@omkarchauhan7675]

Search result: darude sandstorm.

[@Phenomenon4253]

Probably because you don't have perfect pitch to reproduce the song notes 'thus creating an incorrect "fingerprint"

[@riesbezemer4028]

Toto - Afrika

[@yuri0r]

As a cs student this was very fun to watch. I paused at every bit of the video where a problem was introduced and thought a little bit about it. And was happy to see that I mostly got very close to the presented solution. :)

[@dannydaw59]

I wish I could whistle a tune that's in my head to Shazam and have it recognize it.

[@ahmed38247]

i was thinking the same, like why can't i just hum the song and have it recognized.. apparently i need to have the same timbre

[@Ivy_film]

@@ahmed38247 you can do that with soundhound

[@ahmed38247]

@@Ivy_film oh rly? ty

[@kubiborglar]

there is a website where you can tap the rhythm and it shows 10 similar songs. Worked for me every time. Also you can choose is it classical music or non-classical

[@ThylerXD]

@@kubiborglar oh?? do you know what that website is called? i have this song that has been stuck in my head for months now so it might help

[@FactiriosityYT]

How KZbin Works: It recommends good videos 2 years later.

[@Hassan-bg9gb]

The accuracy in this!

[@RizzaRazzu]

4 years later...

[@dougfredricks2017]

L😂L

[@Flint404]

This episode is brought to you by KZbin forcibly shoving it into your recommendations.

[@hybby]

Good job KZbin. Education over entertainment.

[@Alex_-oc4bt]

@@hybby good job KZbin, subtle advertising over entertainment.

[@adeepta9344]

That's why I love KZbin...

[@dragonballZbigBang]

What a joke of a video. Pretty sure Shazam doesn't use hashtable. Wish I could block channels on KZbin

[@ShonHarito2]

@@dragonballZbigBang why u so sure?

[@aido179]

Delighted to have played a part in this.

[@aido179]

@@dosmastrify Co-Writer: Aidan Breen

[@hwinangkoso]

Aidan Breen lol

[@cosmicreciever]

I love how he pronounces timbre 'timber' even though when it first comes up it literally has the IPA pronunciation right there.

[@Mrbasscarrot]

Yep!

[@BrynTru]

He’s working hard to remove all the frenchy’ness from English. I’ll give him points.

[@watchingperson5357]

I'm curious, did y'all learn to read/taught the existence of IPA pronunciation in school, and are you in e.g. UK, USA, NZ, Canada, Australia? I just tune out every IPA pronunciation text whenever I see it, never even heard/realised its importance/ prevalence until recently when I saw an overseas relative use it.

[@bamsuth9650]

@@watchingperson5357 yep i do

[@ronnyxas]

@@BrynTru what frenchy’ness ?

[@kezzu5849]

I've been watching your channel for years, but as a developer this is definitely the most intriguing video I've seen on your channel. Bravo 👏🏿

[@kinangeagle133]

Nothing beats searching the lyrics and seeing a song with a title far from what you searched, then you learned 3 months later that that was the song you were looking for

[@fernandoferpaoficial6026]

😂😂

[@oreolamp5676]

How is Rick Astley’s ”Never gonna give you up” NOT the most recodnizable song of all time?

[@CrazyFunnyCats]

Oreo Lamp 😹and Vanilla Ice ice baby ! 😷💩

[@b2spirit35]

Or megalovania

[@criticalhard]

or stfu with that dead joke.

[@SuryaTejaKarra]

or We Will Rock You by Queen?

[@pepkin88]

@@CrazyFunnyCats No, because Ice Ice Baby is too similar to Under Pressure by Queen.

[@mrwhite6529]

Damn These KZbin guys know everything

[@maximiliansirzen6340]

I’m really blown out by the fact that it recognizes classical pieces if you yourself play them in a normal way! I tried that in a few pieces like Chopin and it works!

[@NevinWilliams71]

When I first got my iPad, quite a few years ago, now, I was curious about Shazam, and how much data it was sending back to its servers to identify a song. I set up a packet sniffer on my wifi network, and monitored just the amount of traffic to and from my iPad while using the Shazam app. I just tried it again; it's more difficult to discern exactly what traffic is Shazam, and what traffic is part of the exchange to bring up album info and other tie-ins, however, from the time I pressed the Shazam button to getting a response, my computer sent a total of 1176 bytes of data out. If that was pure audio data,, would only contain an audio sample of a small fraction of a second; certainly not enough to provide any clue as to the music that was playing. The video explained nicely how such a small amount of data could possibly match a record in Shazam's database. Thanks!

[@vishalshete5820]

Means so mutch computation done on our local device to reduce data. I mean classification of data. From my student of data scientist perspective

[@tech-hilfeportal6611]

Why are we such nerds (yes I am a nerd)

[@RaquelFoster]

As a software developer I think it’s pretty awesome to see an amped-up dumbed-down video about the Fast Fourier Transform and hash functions. When people ask me how something works, this is the part where I notice they’re wishing they didn’t ask me.

[@adityabanerjee_1899]

The animations are on spot, great great work on the animation guys Brilliant.

[@moboxgraphics]

Thanks :D

[@Onionbagel]

Short Explanation: Shazam is the acronym of six immortal Gods, (Solomon, Hercules, Atlas, Zeus, Achilles and Mercury). Just shout "Shazam" out in public and a bolt of lighting will strike you, granting you the power of superhuman strength, speed and agility, and the ability to fly. Also, it's all magic based, even Superman struggles against it.

[@josefmuller6070]

>Achilles >Immortal He died when he got a sepsis from getting an arrow into the back of his foot. What a loser.

[@BeachLookingGuy]

It's easy... Darude - Sand Storm

[@gregorwellard349]

No one wants that shit anymore 🤧😪

[@BeachLookingGuy]

C'mon, somebody had to say it 😂

[@imreerdos2372]

Old but gold 😄

[@kawaiisana3912]

Swedish House Mafia - Greyhound. *The best edm ever made*

[@grimblegrumble]

That would be a brilliant Shazam april fools joke; every search comes back as 'Darude - Sandstorm'.

[@mtbrain1]

OK then how does SoundHound work because with that you can even hum or get the words wrong

[@Pulkit__7]

Intersting, maybe some different approach

[@magillanz]

what gets me is how Shazam gets the right version of a song not just the song. Many songs have been covered many times but it always comes up with the right version.

[@tranarchist6335]

Usually yes, but sometimes it completely screws up and thinks it's some random remix of the song

[@FutureNow]

Okay, but how does ShamWow work?

[@RealEngineering]

Some questions are best left unanswered

[@FutureNow]

@@RealEngineering The world will never know.

[@willdepue1071]

Black magic

[@volvo09]

It has me saying "WOW!" every time I use it.

[@Red-Magic]

www.shamwow.com/SHMWOW/6.0000/Index.dtm?otsid=9912

[@evaristegalois6282]

You should make an episode on how to engineer a good *KZbin Rewind* because we're in short supply of those

[@drazgul9403]

Would be great for April fools day

[@gwinyaiejchipunza7168]

kzbin.info/www/bejne/rpK8cnyql5WpbJo best review yet.

[@USSAnimeNCC-]

Glad I haven't seen it

[@Red-Magic]

I don't get why people care about those. I'd rather watch videos I know I'll like, thank you very much.

[@halasimov1362]

Step 1: Start with a new platform!

[@andresluukas1922]

>Puts IPA of "timbre" on screen >Still says "timber"

[@yuvs0]

made me want to burn my ears :/

[@HyperDash]

Came here to comment this.

[@joeljames2829]

@Andres Luukas , Real Engineering already commented for the reason behind it.

[@joeljames2829]

@@HyperDash funny how you don't see his comment, when you scroll down the comment section

[@HyperDash]

@@joeljames2829 I saw that after I made my comment. My apologies.

[@Abitibidoug]

Wow, that's a very good explanation. I've always wondered how this program works since starting to use it almost 3 years ago. With my electrical and electronics background, I had no trouble understanding the 3D spectogram and the simplified fingerprint. So far so good. It got harder to understand with the hash functions (no, not the kind you smoke) but it's obvious by now it's looking for certain patterns in any song. It's another example of using fancy high tech algorithms to simplify data like those used used to compress audio or video. I'm absolutely amazed that there are people smart enough to figure these algorithms out and how to make them work!

[@dem4xed]

I was asking this myself many times, but never really researched it. Thank you so much ☺️

[@moboxgraphics]

I can't wait to buy the book, "The Motion Toolbox". Gotta get through "Three days in Eli" first

[@162manoj]

As a new computer engineer, the way the solved this problem blows my mind! I always wondered how song recognition apps work so freaking fast. Thanks!

[@FilterChain]

you will learn indexing sometime soon if you do SQL and stored procedures

[@ladislaskrstic8328]

I use shazam a lot. And it is indeed so freakin fast. Like, shazaaaam! And there you go

[@thatunnamedredshirt]

Really? I just spent most of the time triggered over his explaination of hashes.

[@cornelmasson4610]

It's not just the algorithm, there's also an enormous amount of computing power behind it, massive clusters of servers searching in parallel.

[@8BitHate]

I love how causally you explain modulo operation in such a simple way 😂🤣

[@danielmccarville225]

If there was an award for best KZbin channel, it would go to “real engineering.“Fascinating, interesting and easy to understand.

[@kwstakis10100]

INCREDIBLE video...As a computer science engineering student, some point i thought about how this could work but i never looked for it..And now youtube recomended it..You earned a subscribe..(My thoughts about how it could work were close)

[@awabqureshi814]

Huh, always wondered. Thanks!

[@danward1070]

*not sponsored by Shazam*

[@hithummah]

nor DC comic

[@chandrakanttripathi781]

@@hithummah I got that reference.😂

[@LOOTS243]

Yes

[@marcooosbibendorsht1334]

This isn't an airplane

[@normieperson]

This isn't Wendover

[@marcooosbibendorsht1334]

Oh shit

[@ShinTsurugi7]

This isn't mustard

[@tomassholemuller8659]

Aeroplane*

[@marcooosbibendorsht1334]

@@tomassholemuller8659 no

[@gustavosaliola]

At aprox. 8.42 my mind just melted. For that reason, here goes my Global Hug for all the programmers in the world. Excelent video. Was the answer to a chat with friends some time ago.

[@houssemhammami7816]

I swear 3 days ago or so i was thinking of how shazam works but i forgot to search on it on youtube and now randomly your video popped up on my recommendation list , I subscribed immediately

[@0xssff]

-"How Shazam Works?" -SHAZZAAAM! That's how it works..

[@wunder1385]

Real Software? Engineering

[@oilybrakes]

Well, I leaned most of his explanations during my studies of electrical engineering.

[@nicky_tdbp5353]

Hotel? Trivago

[@tormenmashi_]

@@nicky_tdbp5353 damm you beat me

[@Sephirot120]

@@oilybrakes That's because hes only talking about the design of the solutions in the video, not a single line of the code is shown in the video, but programming this solution is another complex challenge itself, that's where Software Engineering comes into play

[@napynap]

I've always thought the tech that Shazam uses is the most amazing thing on my phone. Now I know why. Thank you for the video!

[@niccolowalrond6189]

Two things, this video was very well done and explained well and that was the best sponsor spot and segway I have every seen.

[@moracamposricardouriel3172]

My god! I spent almost a week trying to find the relationship between hash tables and the Shazam algorithm and I' couldn't until this video. Thank you so much, I appreciate it.

[@alptklu]

How Shazam Works until minute 4: history of humankind

[@edulira]

Glad someone said it xD

[@yopo654]

Gotta hit that 10 min mark

[@A2ZStudioPrague]

Wow, this video actually does explain it quite understandably!

[@keco185]

How is an anchor point reliably determined? That’s the part I never got. How can the phone ensure that the first point it uses is the first point in song snippet stored in a db

[@RealEngineering]

That is explained in the "coding geek" reference in the description. It was a bit of a long winded and boring explanation, so I left it out of the video.

[@HamzaKhan-us1cd]

I'm a 2nd year software engineering student and I didn't understood shit in this video... Now I'm depressed by thinking what I'm gonna do with my future xD

[@mikosoft]

This is just a basic concept. I'm pretty sure there's more going on to make sure the pattern is recognized.

[@keco185]

Hamza Khan a lot of this stuff will be taught in transforms. CE/EE students need to learn it, it’s possible software engineering students don’t

[@rujotheone]

Shazam most likely uses DSP algorithms along with the explained hashing.

[@melchiortod29]

When mentioned hash, it blew my mind. I'd never have expected to find hash over here! That's crazy! They are geniusses these guys!

[@blank001]

The one who made shazam is highly underrated.

[@jackhu7967]

the “two” objectives of a hash function you mentioned here are both literally the same thing. Evenly distributing hashes is the same thing as minimizing collisions. Something you didn’t mention explicitly (even if it’s relatively obvious) is that hash functions will always return the same output given the same input, which is the most important factor that makes them useful.

[@MacSpowman]

Blessed O(1)

[@ZachBillings]

I have wanted to know for so long how Shazam works. I've been using it since the days when you dialed a number to use it on a flip phone.

[@TeslaHaxz]

God, i feel old now

[@volvo09]

Holy shit, that's cool! (i haven't used it, surprisingly) I never looked into it, thought it was an advertising dump or something, just from seeing those commercials where you can check out a "funny" advert in shazam..... Those caused me to not look into it.

[@ZachBillings]

@@volvo09 No it's a great app. I've never been great at remembering song names or even artists, so when I hear something I like or recognize that I want to find later, I Shazam it.

[@volvo09]

@@ZachBillings awesome, thanks! I stink at remembering songs too, so I'm going to download it now.

[@andyrharris]

And it cost 50p per phone call, imagine most people being willing to spend 50p on an app these days, let alone a phone call!

[@oldred9122]

There's a whole episode of Married with Children about Al Bundy trying to figure out the name of a song he heard. How did people survive back then?!

[@trevorjalla]

hmm hmm HIIIIM lol

[@adobovs271]

They didn't!!! 🎼

[@colinpovey9560]

I learned to program computers back in the 1970's. I consider Shazam the most amazing piece of software I have ever seen. It's speed and accuracy astound me every time I use it.

[@reddragon7408]

I usually share this kind of videos so people can learn about cool stuff and also support this channel that had taught me a lot.

[@AllPileup]

At first I think of that DC hero...damnit

[@RealEngineering]

Not gonna lie, I am hoping that I get a high SEO ranking for Shazam and get some views that way.

[@shibnathroy106]

@@RealEngineering you are very honest. Good

[@rowan-paul]

@@RealEngineering should've changed the Shazam logo to Shazam in thumbnail

[@salabhsg]

@@RealEngineering You weren't wrong. You got my attention.

[@purab1552]

😂😂

[@benitollan]

What a coincidence I was just wondering about this yesterday

[@Halzion_]

Lol me too

[@ezioauditore5616]

I always wonder about this everytime i see my shazam app

[@benitollan]

@@ezioauditore5616 I knew hashes had to have something to do with it, but I wondered how it was possible to create viable hashes out of sounds that in real life are influenced by a lot of factors (ambient noise, remixes, different sound systems with different sound signatures, different smartphone microphones, etc)

[@jeelanhusain1440]

I was wondering about this all my life

[@mc_lovin363]

Benito Llan Matos I wondered the same thing too

[@user-lynKx]

When I press that button, all I do is hope that the artist put their song on Spotify.

[@socks2441]

or mpthree clan has it....

[@tech-hilfeportal6611]

Actually they use ape music

[@Onetwistyboi]

Wow.. I always figured they matched soundwaves to a database, but there's so much more to that. Amazing video

[@shakya00]

This channel is gold, quality and vulgarization of high level !

[@fa.h.]

I don't use Shazam, I just use Google Voice/assistant whatever it's called now. When it detects music you just press the note button and then it does it's thing

[@aravindr7166]

Google Assistant does the job

[@ANTH0NY.VII.]

Thing is, Shazam still struggles when listening to my music (edm) so I have to try it like around 5 times before it actually gives me a match.

[@IntenseVLT]

Maybe you’re helping it learn?

[@xCarbonBlack]

@@IntenseVLT you have to record a particular frequency, synth or sound on EDM songs to find it instantly

[@vivekjain1667]

Try google instead. Open your assistant and ask it, "What's this song"?

[@kissindzerkiss]

@@vivekjain1667 exactly

[@azzaisin]

Why can nobody pronounce timbre.

[@Zeekmeister101]

Probably because oh how it's spelled. Idk tho, seems like a likely reason

[@ladislaskrstic8328]

Is it tim-bre, tim-bræ, tim-brá, or tim-ber?

[@aravindr7166]

It's tam-ber right

[@ZuluGod1]

It even had the pronunciation in the screenshot of the definition. It killed me.

[@cabooseplaysgames2072]

it should be said as "Tamber". Gotta love musical terms!

[@benzigarjs8607]

As A programmer and a musician, I loved this video, ,, 😍😍

[@martinskesteris6331]

OMG this is so complicated. It's incredible how people created this stuff and all the electronic miracles we now have... Beyond my comprehension.

[@BrunoNeureiter]

""GOD""

[@Joostinonline]

3:30 "It's a treaty graph."

[@race5586]

Tripaloski Tripaloski Tripaloski Tripaloski

[@kabanos3k]

Hardbass tussovki adidas krossovki

[@kawaiisana3912]

Cheeki Breeki!

[@vboy2684]

Rush B quick!!!

[@jacobwebb8818]

THE THREE STRIPES

[@BobbyBrixx]

блять

[@benitollan]

0:07 Introduction: Opening, scene in a pub listening to a song and opening the shazam app.

[@Dave-ct1jk]

This was your best transition to your sponser yet. Good job

[@schonkat1982]

How KZbin algorithm works: 4 years later I get the recommendation for a great video

[@averysmith9462]

This video is so interesting. Also just so y’all know, timbre is pronounced like tamber

[@JerryC25]

1:53 you didn’t give us any time to answer! Lol

[@kirasmith1147]

That was the point, people were able to recognise the song and press stop within the time we heard the song.

[@BobMcCoy]

*_KZbin Music wants to know your location_*

[@wfdy8333]

Shazam is a wonderful innovation that made my life easier, upgraded.

[@moderatelyseriousracoon2254]

Shazam should add a feature that recognises songs from rhythm eg if you forget a song and curious to try and Rembrandt what it is you can hum the rhythm and Shazam shows you the song this would be extremely helpful.

[@metrabyte03]

“Timber” 🌲it’s pronounced “tAmber”

[@Knight_Astolfo]

How big is your library that they have a shelf for each book? Does each shelf have a librarian? Can I apply for that job? I can sleep under my desk and shave in the bathroom!

[@Knight_Astolfo]

@K.D.P. Ross Let me introduce you to something called 'humor' ...

[@Knight_Astolfo]

@K.D.P. Ross Hey dude. I know you're trying to be smart. You're very smart and we're all proud of you. *applause*

[@Knight_Astolfo]

@K.D.P. Ross Bored, huh? Can't help you. Analytics don't agree with your opinions. I'm sorry you didn't like my dumb joke. Nothing I can do about that. All I really can do is laugh at you. You're way funnier than I'll ever be. Jajajajajajaja.

[@goobot829]

1:51 Well, RIP your monetization

[@Phippe]

Had this question for so long, but never bothered to search for an answer. Great video, keep it up!

[@ranisinha8301]

I'm a computer engineer aspirant and your video really increased my desire to become one

[@EtsuMatsuya]

For some reason, I thought it was EMF - Unbelievable. ... I guess I have failed as a human. Maybe the Machines should take over.

[@luismg2130]

It just means we're older, mate. Machines will take over, don' worry.

[@Fungamerplays]

0:13 i think you left some of your personal notes in the script for the subtitles

[@LuminousLead]

Haha that's really funny XD

[@trevorscheidt3483]

“How Shazam works” It has never worked for me which is why I clicked on this video

[@atlf3357]

Ikr 🙄

[@DQHW]

Amazing how complex it is, yet how fast the app manages to do it.

[@SportiClips]

Me at 8:00PM - I should get a nights sleep tonight... Me at 2:00AM - How does Shazam work?...

[@ericfernandes3966]

Like literally for me it's 1:00AM now True story😂😂

[@x_tomasu_x5452]

Plot twist: its a guy in a closet who was forced to learn every song

[@swayingGrass]

How does youtube copyright Tower of Sauron find that very faint background song?

[@TheRadiastral]

A while ago, I was trying to upload footage, where I talk in my car, while driving. Stereo was on, but quietly, as I was talking to the camera, so wanted to make sure I can be clearly heard. Yet my vid got copyright claim, because of some song, that just happened to be on the Radio. Crazy.

[@deneth3310]

Doesn’t the pixel already do that built into the os

[@R111-q2v]

Evil Gummy Bear yes

[@RealEngineering]

Yeap, but I don't particularly want to give google permission to actively monitor my microphone

[@deneth3310]

Real Engineering oh, I was just wondering since it looked like you had a pixel 2, i think?

[@nantzstein3311]

@@deneth3310 .

[@SuperSiggiboy]

Yes, but the Shazam app launched in 2008, ten years ago. It wasn't as great as today at first, but I remember it being brilliant when I first tested it around 2010

[@jadenfernando]

This is an awesome video. Appreciate the time you took for the research and the animations🙌🏻

[@Sj0846]

A Summarized View => Situation For us recognizing a song in a noisy environment seems like a trivial task our brain can identify songs quickly from a young age. But pathways that allow this are incredibly complex. The simple combination of tones in a specific order allows us to identify a song from thousands of other songs in our memory. But coding a computer to do this is an incredible coding challenge. Because computers don't possess an intuitive understanding of music. A computer can only compare a song to other songs in its database looking for a match which is like finding a needle in a haystack comparing every straw for its length and color with the needle. Complication Our brain doesn’t take a sound and compare it to every other sound in our memory like a computer. Instead, the specific combination of chords in progression simply activates the specific neurons that unlock that historical data. This even works when the same song is played by different instruments and also intuitively we know from which instrument it has been played from. The difference is created by timbre. The instruments like pianos and guitars produce nodes that aren’t just made of a single frequency. Each node is a combination of multiple frequencies all related to the base node which are called overtones. Each instrument has a unique combination of these tones that give them a unique sound. Shazam needs to find a way to quantify these characteristics for a computer to recognize. Solution This can be done through visually representing sound aka spectrogram which is a 3d graph with time on x-axis and frequency on y-axis and amplitude (loudness) on z-axis. Computers can recognize this 3d graph and store it as data. Question How is shazam able to reduce computational time when we know spectrograms are data-intensive? Answer To reduce the data and hence the computational time shazam uses what they call a FINGERPRINT. Shazam transforms a spectrogram into a star map in which each star represents the strongest frequency at a particular time. Doing this, Shazam not only reduced the graph down to 2d but has drastically reduced the number of data points on the graph. This method also helps shazam to filter out noise as it only creates data points for stand out frequencies. Every single song in shazam’s DB is stored as a fingerprint like this. Question The recorded fingerprint is only a short recording of the song. For Example, if we take three recorded frequencies with each having three-time points for the match to happen shazam has to perform nine operations with three existing frequencies and then move onto the other three until it finds a match in shazam’s massive music archive. How does Shazam is able to dodge this computational disaster? Answer Shazam doesn't search to see if a node exists in a song, It searches to see if several nodes exist separated by a particular time just as our brain does. This becomes their searchable address for a hash table. The hash function goes through shazam’s DB of songs and calculates the hash number for each anchor point pair. Songs contain multiple anchor points, which will allow shazam to categorize short snippets of songs by the frequency of the anchor point, the frequency of the following point and the time between them and store each anchor point by the hash. These addresses are also categorized with song ids and time stamps within the song in a secondary hash table, allowing it to search for a matching song. This makes it much faster to locate the matches

[@atlas7309]

2:46 Oh. Just like wood...

[@conormatthews8921]

I see a Tantacrul watcher...

[@wasilur6492]

I remember the song "you suffer" made by napalm death.

[@عبدالله-ه5ه9ك]

You tell me

[@nicoprocessor]

I've been searching for a clear explanation for a while, thank you very much, great job!

[@anbuselvan2004]

Always wondered how it works, it's pure genius work from shazam team. Thanks for sharing